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<?php
/*
* This work is hereby released into the Public Domain.
* To view a copy of the public domain dedication,
* visit http://creativecommons.org/licenses/publicdomain/ or send a letter to
* Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
*
*/
/**
* Draw your objects
*
* @package Artichow
*/
class awDrawer {
/**
* A GD resource
*
* @var $resource
*/
public $resource;
/**
* Image width
*
* @var int
*/
public $width;
/**
* Image height
*
* @var int
*/
public $height;
/**
* Drawer X position
*
* @var int
*/
public $x;
/**
* Drawer Y position
*
* @var int
*/
public $y;
private $w;
private $h;
/**
* Build your drawer
*
* @var resource $resource A GD resource
*/
public function __construct($resource) {
$this->resource = $resource;
}
/**
* Change the image size
*
* @param int $width Image width
* @param int $height Image height
*/
public function setImageSize($width, $height) {
$this->width = $width;
$this->height = $height;
}
/**
* Inform the drawer of the position of your image
*
* @param float $x Position on X axis of the center of the component
* @param float $y Position on Y axis of the center of the component
*/
public function setPosition($x, $y) {
// Calcul absolute position
$this->x = round($x * $this->width - $this->w / 2);
$this->y = round($y * $this->height - $this->h / 2);
}
/**
* Inform the drawer of the position of your image
* This method need absolutes values
*
* @param int $x Left-top corner X position
* @param int $y Left-top corner Y position
*/
public function setAbsPosition($x, $y) {
$this->x = $x;
$this->y = $y;
}
/**
* Move the position of the image
*
* @param int $x Add this value to X axis
* @param int $y Add this value to Y axis
*/
public function movePosition($x, $y) {
$this->x += (int)$x;
$this->y += (int)$y;
}
/**
* Inform the drawer of the size of your image
* Height and width must be between 0 and 1.
*
* @param int $w Image width
* @param int $h Image height
* @return array Absolute width and height of the image
*/
public function setSize($w, $h) {
// Calcul absolute size
$this->w = round($w * $this->width);
$this->h = round($h * $this->height);
return $this->getSize();
}
/**
* Inform the drawer of the size of your image
* You can set absolute size with this method.
*
* @param int $w Image width
* @param int $h Image height
*/
public function setAbsSize($w, $h) {
$this->w = $w;
$this->h = $h;
return $this->getSize();
}
/**
* Get the size of the component handled by the drawer
*
* @return array Absolute width and height of the component
*/
public function getSize() {
return array($this->w, $this->h);
}
/**
* Draw an image here
*
* @param awImage $image Image
* @param int $p1 Image top-left point
* @param int $p2 Image bottom-right point
*/
public function copyImage(awImage $image, awPoint $p1, awPoint $p2) {
list($x1, $y1) = $p1->getLocation();
list($x2, $y2) = $p2->getLocation();
$drawer = $image->getDrawer();
imagecopy($this->resource, $drawer->resource, $this->x + $x1, $this->y + $y1, 0, 0, $x2 - $x1, $y2 - $y1);
}
/**
* Draw an image here
*
* @param awImage $image Image
* @param int $d1 Destination top-left position
* @param int $d2 Destination bottom-right position
* @param int $s1 Source top-left position
* @param int $s2 Source bottom-right position
* @param bool $resample Resample image ? (default to TRUE)
*/
public function copyResizeImage(awImage $image, awPoint $d1, awPoint $d2, awPoint $s1, awPoint $s2, $resample = TRUE) {
if($resample) {
$function = 'imagecopyresampled';
} else {
$function = 'imagecopyresized';
}
$drawer = $image->getDrawer();
$function(
$this->resource,
$drawer->resource,
$this->x + $d1->x, $this->y + $d1->y,
$s1->x, $s1->y,
$d2->x - $d1->x, $d2->y - $d1->y,
$s2->x - $s1->x, $s2->y - $s1->y
);
}
/**
* Draw a string
*
* @var awText $text Text to print
* @param awPoint $point Draw the text at this point
*/
public function string(awText $text, awPoint $point) {
$font = $text->getFont();
if($text->getBackground() !== NULL or $text->border->visible()) {
list($left, $right, $top, $bottom) = $text->getPadding();
$width = $font->getTextWidth($text);
$height = $font->getTextHeight($text);
$x1 = floor($point->x - $left);
$y1 = floor($point->y - $top);
$x2 = $x1 + $width + $left + $right;
$y2 = $y1 + $height + $top + $bottom;
$this->filledRectangle(
$text->getBackground(),
awLine::build($x1, $y1, $x2, $y2)
);
$text->border->rectangle(
$this,
new awPoint($x1 - 1, $y1 - 1),
new awPoint($x2 + 1, $y2 + 1)
);
}
$font->draw($this, $point, $text);
}
/**
* Draw a pixel
*
* @param awColor $color Pixel color
* @param awPoint $p
*/
public function point(awColor $color, awPoint $p) {
if($p->isHidden() === FALSE) {
$rgb = $color->getColor($this->resource);
imagesetpixel($this->resource, $this->x + round($p->x), $this->y + round($p->y), $rgb);
}
}
/**
* Draw a colored line
*
* @param awColor $color Line color
* @param awLine $line
* @param int $thickness Line tickness
*/
public function line(awColor $color, awLine $line) {
if($line->thickness > 0 and $line->isHidden() === FALSE) {
$rgb = $color->getColor($this->resource);
$thickness = $line->thickness;
list($p1, $p2) = $line->getLocation();
$this->startThickness($thickness);
switch($line->getStyle()) {
case awLine::SOLID :
imageline($this->resource, $this->x + round($p1->x), $this->y + round($p1->y), $this->x + round($p2->x), $this->y + round($p2->y), $rgb);
break;
case awLine::DOTTED :
$size = sqrt(pow($p2->y - $p1->y, 2) + pow($p2->x - $p1->x, 2));
$cos = ($p2->x - $p1->x) / $size;
$sin = ($p2->y - $p1->y) / $size;
for($i = 0; $i <= $size; $i += 2) {
$p = new awPoint(
round($i * $cos + $p1->x),
round($i * $sin + $p1->y)
);
$this->point($color, $p);
}
break;
case awLine::DASHED :
$width = $p2->x - $p1->x;
$height = $p2->y - $p1->y;
$size = sqrt(pow($height, 2) + pow($width, 2));
if($size == 0) {
return;
}
$cos = $width / $size;
$sin = $height / $size;
for($i = 0; $i <= $size; $i += 6) {
$t1 = new awPoint(
round($i * $cos + $p1->x),
round($i * $sin + $p1->y)
);
$function = ($height > 0) ? 'min' : 'max';
$t2 = new awPoint(
round(min(($i + 3) * $cos, $width) + $p1->x),
round($function(($i + 3) * $sin, $height) + $p1->y)
);
$this->line($color, new awLine($t1, $t2));
}
break;
}
$this->stopThickness($thickness);
}
}
/**
* Draw a color arc
* @param awColor $color Arc color
* @param awPoint $center Point center
* @param int $width Ellipse width
* @param int $height Ellipse height
* @param int $from Start angle
* @param int $to End angle
*/
public function arc(awColor $color, awPoint $center, $width, $height, $from, $to) {
imagefilledarc(
$this->resource,
$this->x + $center->x, $this->y + $center->y,
$width, $height,
$from, $to,
$color->getColor($this->resource),
IMG_ARC_EDGED | IMG_ARC_NOFILL
);
}
/**
* Draw an arc with a background color
*
* @param awColor $color Arc background color
* @param awPoint $center Point center
* @param int $width Ellipse width
* @param int $height Ellipse height
* @param int $from Start angle
* @param int $to End angle
*/
public function filledArc(awColor $color, awPoint $center, $width, $height, $from, $to) {
imagefilledarc(
$this->resource,
$this->x + $center->x, $this->y + $center->y,
$width, $height,
$from, $to,
$color->getColor($this->resource),
IMG_ARC_PIE
);
}
/**
* Draw a colored ellipse
*
* @param awColor $color Ellipse color
* @param awPoint $center Ellipse center
* @param int $width Ellipse width
* @param int $height Ellipse height
*/
public function ellipse(awColor $color, awPoint $center, $width, $height) {
list($x, $y) = $center->getLocation();
$rgb = $color->getColor($this->resource);
imageellipse(
$this->resource,
$this->x + $x,
$this->y + $y,
$width,
$height,
$rgb
);
}
/**
* Draw an ellipse with a background
*
* @param mixed $background Background (can be a color or a gradient)
* @param awPoint $center Ellipse center
* @param int $width Ellipse width
* @param int $height Ellipse height
*/
public function filledEllipse($background, awPoint $center, $width, $height) {
if($background instanceof awColor) {
list($x, $y) = $center->getLocation();
$rgb = $background->getColor($this->resource);
imagefilledellipse(
$this->resource,
$this->x + $x,
$this->y + $y,
$width,
$height,
$rgb
);
} else if($background instanceof awGradient) {
list($x, $y) = $center->getLocation();
$x1 = $x - round($width / 2);
$y1 = $y - round($height / 2);
$x2 = $x1 + $width;
$y2 = $y1 + $height;
$gradientDrawer = new awGradientDrawer($this);
$gradientDrawer->filledEllipse(
$background,
$x1, $y1,
$x2, $y2
);
}
}
/**
* Draw a colored rectangle
*
* @param awColor $color Rectangle color
* @param awLine $line Rectangle diagonale
* @param awPoint $p2
*/
public function rectangle(awColor $color, awLine $line) {
$p1 = $line->p1;
$p2 = $line->p2;
switch($line->getStyle()) {
case awLine::SOLID :
$thickness = $line->getThickness();
$this->startThickness($thickness);
$rgb = $color->getColor($this->resource);
imagerectangle($this->resource, $this->x + $p1->x, $this->y + $p1->y, $this->x + $p2->x, $this->y + $p2->y, $rgb);
$this->stopThickness($thickness);
break;
default :
// Top side
$line->setLocation(
new awPoint($p1->x, $p1->y),
new awPoint($p2->x, $p1->y)
);
$this->line($color, $line);
// Right side
$line->setLocation(
new awPoint($p2->x, $p1->y),
new awPoint($p2->x, $p2->y)
);
$this->line($color, $line);
// Bottom side
$line->setLocation(
new awPoint($p1->x, $p2->y),
new awPoint($p2->x, $p2->y)
);
$this->line($color, $line);
// Left side
$line->setLocation(
new awPoint($p1->x, $p1->y),
new awPoint($p1->x, $p2->y)
);
$this->line($color, $line);
break;
}
}
/**
* Draw a rectangle with a background
*
* @param mixed $background Background (can be a color or a gradient)
* @param awLine $line Rectangle diagonale
*/
public function filledRectangle($background, awLine $line) {
$p1 = $line->p1;
$p2 = $line->p2;
if($background instanceof awColor) {
$rgb = $background->getColor($this->resource);
imagefilledrectangle($this->resource, $this->x + $p1->x, $this->y + $p1->y, $this->x + $p2->x, $this->y + $p2->y, $rgb);
} else if($background instanceof awGradient) {
$gradientDrawer = new awGradientDrawer($this);
$gradientDrawer->filledRectangle($background, $p1, $p2);
}
}
/**
* Draw a polygon
*
* @param awColor $color Polygon color
* @param Polygon A polygon
*/
public function polygon(awColor $color, awPolygon $polygon) {
switch($polygon->getStyle()) {
case awPolygon::SOLID :
$thickness = $line->getThickness();
$this->startThickness($thickness);
$points = $this->getPolygonPoints($polygon);
$rgb = $color->getColor($this->resource);
imagepolygon($this->resource, $points, $polygon->count(), $rgb);
$this->stopThickness($thickness);
break;
default :
if($polygon->count() > 1) {
$prev = $polygon->get(0);
$line = new awLine;
$line->setStyle($polygon->getStyle());
$line->setThickness($polygon->getThickness());
for($i = 1; $i < $polygon->count(); $i++) {
$current = $polygon->get($i);
$line->setLocation($prev, $current);
$this->line($color, $line);
$prev = $current;
}
}
}
}
/**
* Draw a polygon with a background
*
* @param mixed $background Background (can be a color or a gradient)
* @param Polygon A polygon
*/
public function filledPolygon($background, awPolygon $polygon) {
if($background instanceof awColor) {
$points = $this->getPolygonPoints($polygon);
$rgb = $background->getColor($this->resource);
imagefilledpolygon($this->resource, $points, $polygon->count(), $rgb);
} else if($background instanceof awGradient) {
$gradientDrawer = new awGradientDrawer($this);
$gradientDrawer->filledPolygon($background, $polygon);
}
}
private function getPolygonPoints(awPolygon $polygon) {
$points = array();
foreach($polygon->all() as $point) {
$points[] = $point->x + $this->x;
$points[] = $point->y + $this->y;
}
return $points;
}
private function startThickness($thickness) {
if($thickness > 1) {
// Beurk :'(
imageantialias($this->resource, FALSE);
imagesetthickness($this->resource, $thickness);
}
}
private function stopThickness($thickness) {
if($thickness > 1) {
imagesetthickness($this->resource, 1);
imageantialias($this->resource, TRUE);
}
}
}
registerClass('Drawer');
/**
* To your gradients
*
* @package Artichow
*/
class awGradientDrawer {
/**
* A drawer
*
* @var Drawer
*/
protected $drawer;
/**
* Build your GradientDrawer
*
* @var awDrawer $drawer
*/
public function __construct(awDrawer $drawer) {
$this->drawer = $drawer;
}
public function drawFilledFlatTriangle(awGradient $gradient, awPoint $a, awPoint $b, awPoint $c) {
if($gradient->angle !== 0) {
trigger_error("Flat triangles can only be used with 0 degree gradients", E_USER_ERROR);
}
// Look for right-angled triangle
if($a->x !== $b->x and $b->x !== $c->x) {
trigger_error("Not right-angled flat triangles are not supported yet", E_USER_ERROR);
}
if($a->x === $b->x) {
$d = $a;
$e = $c;
} else {
$d = $c;
$e = $a;
}
$this->init($gradient, $b->y - $d->y);
for($i = $c->y + 1; $i < $b->y; $i++) {
$color = $this->color($i - $d->y);
$pos = ($i - $d->y) / ($b->y - $d->y);
$p1 = new awPoint($e->x, $i);
$p2 = new awPoint(1 + floor($e->x - $pos * ($e->x - $d->x)), $i);
$this->drawer->filledRectangle($color, new awLine($p1, $p2));
$color->free();
unset($color);
}
}
public function filledRectangle(awGradient $gradient, awPoint $p1, awPoint $p2) {
list($x1, $y1) = $p1->getLocation();
list($x2, $y2) = $p2->getLocation();
if($y1 < $y2) {
$y1 ^= $y2 ^= $y1 ^= $y2;
}
if($x2 < $x1) {
$x1 ^= $x2 ^= $x1 ^= $x2;
}
if($gradient instanceof awLinearGradient) {
$this->rectangleLinearGradient($gradient, new awPoint($x1, $y1), new awPoint($x2, $y2));
} else {
trigger_error("This gradient is not supported by rectangles", E_USER_ERROR);
}
}
public function filledPolygon(awGradient $gradient, awPolygon $polygon) {
if($gradient instanceof awLinearGradient) {
$this->polygonLinearGradient($gradient, $polygon);
} else {
trigger_error("This gradient is not supported by polygons", E_USER_ERROR);
}
}
protected function rectangleLinearGradient(awLinearGradient $gradient, awPoint $p1, awPoint $p2) {
list($x1, $y1) = $p1->getLocation();
list($x2, $y2) = $p2->getLocation();
if($y1 - $y2 > 0) {
if($gradient->angle === 0) {
$this->init($gradient, $y1 - $y2);
for($i = $y2; $i <= $y1; $i++) {
$color = $this->color($i - $y2);
$p1 = new awPoint($x1, $i);
$p2 = new awPoint($x2, $i);
$this->drawer->filledRectangle($color, new awLine($p1, $p2));
$color->free();
unset($color);
}
} else if($gradient->angle === 90) {
$this->init($gradient, $x2 - $x1);
for($i = $x1; $i <= $x2; $i++) {
$color = $this->color($i - $x1);
$p1 = new awPoint($i, $y2);
$p2 = new awPoint($i, $y1);
$this->drawer->filledRectangle($color, new awLine($p1, $p2));
$color->free();
unset($color);
}
}
}
}
public function filledEllipse(awGradient $gradient, $x1, $y1, $x2, $y2) {
if($y1 < $y2) {
$y1 ^= $y2 ^= $y1 ^= $y2;
}
if($x2 < $x1) {
$x1 ^= $x2 ^= $x1 ^= $x2;
}
if($gradient instanceof awRadialGradient) {
$this->ellipseRadialGradient($gradient, $x1, $y1, $x2, $y2);
} else if($gradient instanceof awLinearGradient) {
$this->ellipseLinearGradient($gradient, $x1, $y1, $x2, $y2);
} else {
trigger_error("This gradient is not supported by ellipses", E_USER_ERROR);
}
}
protected function ellipseRadialGradient(awGradient $gradient, $x1, $y1, $x2, $y2) {
if($y1 - $y2 > 0) {
if($y1 - $y2 != $x2 - $x1) {
trigger_error("Radial gradients are only implemented on circle, not ellipses");
}
$c = new awPoint($x1 + ($x2 - $x1) / 2, $y1 + ($y2 - $y1) / 2);
$r = ($x2 - $x1) / 2;
$ok = array();
// Init gradient
$this->init($gradient, $r);
for($i = 0; $i <= $r; $i += 0.45) {
$p = ceil((2 * M_PI * $i));
if($p > 0) {
$interval = 360 / $p;
} else {
$interval = 360;
}
$color = $this->color($i);
for($j = 0; $j < 360; $j += $interval) {
$rad = ($j / 360) * (2 * M_PI);
$x = round($i * cos($rad));
$y = round($i * sin($rad));
$l = sqrt($x * $x + $y * $y);
if($l <= $r) {
if(
array_key_exists((int)$x, $ok) === FALSE or
array_key_exists((int)$y, $ok[$x]) === FALSE
) {
// Print the point
$this->drawer->point($color, new awPoint($c->x + $x, $c->y + $y));
$ok[(int)$x][(int)$y] = TRUE;
}
}
}
$color->free();
unset($color);
}
}
}
protected function ellipseLinearGradient(awGradient $gradient, $x1, $y1, $x2, $y2) {
// Gauche->droite : 90°
if($y1 - $y2 > 0) {
if($y1 - $y2 != $x2 - $x1) {
trigger_error("Linear gradients are only implemented on circle, not ellipses");
}
$r = ($x2 - $x1) / 2;
// Init gradient
$this->init($gradient, $x2 - $x1);
for($i = -$r; $i <= $r; $i++) {
$h = sin(acos($i / $r)) * $r;
$color = $this->color($i + $r);
if($gradient->angle === 90) {
// Print the line
$p1 = new awPoint(
$x1 + $i + $r,
round(max($y2 + $r - $h + 1, $y2))
);
$p2 = new awPoint(
$x1 + $i + $r,
round(min($y1 - $r + $h - 1, $y1))
);
} else {
// Print the line
$p1 = new awPoint(
round(max($x1 + $r - $h + 1, $x1)),
$y2 + $i + $r
);
$p2 = new awPoint(
round(min($x2 - $r + $h - 1, $x2)),
$y2 + $i + $r
);
}
$this->drawer->filledRectangle($color, new awLine($p1, $p2));
$color->free();
unset($color);
}
}
}
protected function polygonLinearGradient(awLinearGradient $gradient, awPolygon $polygon) {
$count = $polygon->count();
if($count >= 3) {
$left = $polygon->get(0);
$right = $polygon->get($count - 1);
if($gradient->angle === 0) {
// Get polygon maximum and minimum
$offset = $polygon->get(0);
$max = $min = $offset->y;
for($i = 1; $i < $count - 1; $i++) {
$offset = $polygon->get($i);
$max = max($max, $offset->y);
$min = min($min, $offset->y);
}
$this->init($gradient, $max - $min);
$prev = $polygon->get(1);
$sum = 0;
for($i = 2; $i < $count - 1; $i++) {
$current = $polygon->get($i);
$interval = 1;
if($i !== $count - 2) {
$current->x -= $interval;
}
if($current->x - $prev->x > 0) {
// Draw rectangle
$x1 = $prev->x;
$x2 = $current->x;
$y1 = max($prev->y, $current->y);
$y2 = $left->y;
$gradient = new awLinearGradient(
$this->color($max - $min - ($y2 - $y1)),
$this->color($max - $min),
0
);
if($y1 > $y2) {
$y2 = $y1;
}
$this->drawer->filledRectangle(
$gradient,
awLine::build($x1, $y1, $x2, $y2)
);
$top = ($prev->y < $current->y) ? $current : $prev;
$bottom = ($prev->y >= $current->y) ? $current : $prev;
$gradient = new awLinearGradient(
$this->color($bottom->y - $min),
$this->color($max - $min - ($y2 - $y1)),
0
);
$gradientDrawer = new awGradientDrawer($this->drawer);
$gradientDrawer->drawFilledFlatTriangle(
$gradient,
new awPoint($prev->x, min($prev->y, $current->y)),
$top,
new awPoint($current->x, min($prev->y, $current->y))
);
unset($gradientDrawer);
$sum += $current->x - $prev->x;
}
$prev = $current;
$prev->x += $interval;
}
} else if($gradient->angle === 90) {
$width = $right->x - $left->x;
$this->init($gradient, $width);
$pos = 1;
$next = $polygon->get($pos++);
$this->next($polygon, $pos, $prev, $next);
for($i = 0; $i <= $width; $i++) {
$x = $left->x + $i;
$y1 = round($prev->y + ($next->y - $prev->y) * (($i + $left->x - $prev->x) / ($next->x - $prev->x)));
$y2 = $left->y;
// Draw line
$color = $this->color($i);
// YaPB : PHP does not handle alpha on lines
$this->drawer->filledRectangle($color, awLine::build($x, $y1, $x, $y2));
$color->free();
unset($color);
// Jump to next point
if($next->x == $i + $left->x) {
$this->next($polygon, $pos, $prev, $next);
}
}
}
}
}
private function next($polygon, &$pos, &$prev, &$next) {
do {
$prev = $next;
$next = $polygon->get($pos++);
}
while($next->x - $prev->x == 0 and $pos < $polygon->count());
}
/**
* Start colors
*
* @var int
*/
private $r1, $g1, $b1, $a1;
/**
* Stop colors
*
* @var int
*/
private $r2, $g2, $b2, $a2;
/**
* Gradient size in pixels
*
* @var int
*/
private $size;
private function init(awGradient $gradient, $size) {
list(
$this->r1, $this->g1, $this->b1, $this->a1
) = $gradient->from->rgba();
list(
$this->r2, $this->g2, $this->b2, $this->a2
) = $gradient->to->rgba();
$this->size = $size;
}
private function color($pos) {
return new awColor(
$this->getRed($pos),
$this->getGreen($pos),
$this->getBlue($pos),
$this->getAlpha($pos)
);
}
private function getRed($pos) {
return (int)round($this->r1 + ($pos / $this->size) * ($this->r2 - $this->r1));
}
private function getGreen($pos) {
return (int)round($this->g1 + ($pos / $this->size) * ($this->g2 - $this->g1));
}
private function getBlue($pos) {
return (int)round($this->b1 + ($pos / $this->size) * ($this->b2 - $this->b1));
}
private function getAlpha($pos) {
return (int)round(($this->a1 + ($pos / $this->size) * ($this->a2 - $this->a1)) / 127 * 100);
}
}
registerClass('GradientDrawer');
?>